How to divide large csv file into multiple csv files using chunk size - spring

Question

How to write spring batch configuration class for single csv into multiple csv files ,it should divide based on chunk size and it should divide into multiple csv file based on chunk capacity
How to write spring batch configuration class for single csv into multiple csv files ,it should divide based on chunk size and it should divide into multiple csv file based on chunk capacity
package com.codenotfound.batch;
import org.springframework.batch.core.Job;
import org.springframework.batch.core.Step;
import org.springframework.batch.core.configuration.annotation.JobBuilderFactory;
import org.springframework.batch.core.configuration.annotation.StepBuilderFactory;
import org.springframework.batch.item.file.FlatFileItemReader;
import org.springframework.batch.item.file.FlatFileItemWriter;
import org.springframework.batch.item.file.builder.FlatFileItemReaderBuilder;
import org.springframework.batch.item.file.builder.FlatFileItemWriterBuilder;
import org.springframework.batch.item.file.transform.PassThroughLineAggregator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.FileSystemResource;
import com.codenotfound.model.Person;
#Configuration
public class HelloWorldJobConfig {
#Bean
public Job helloWorlJob(JobBuilderFactory jobBuilders,
StepBuilderFactory stepBuilders) {
return jobBuilders.get("helloWorldJob")
.start(helloWorldStep(stepBuilders)).build();
}
#Bean
public Step helloWorldStep(StepBuilderFactory stepBuilders) {
return stepBuilders.get("helloWorldStep")
.<Person, String>chunk(10).reader(reader())
.processor(processor()).writer(writer()).build();
}
#Bean
public FlatFileItemReader<Person> reader() {
return new FlatFileItemReaderBuilder<Person>()
.name("personItemReader")
.resource(new ClassPathResource("csv/persons.csv"))
.delimited().names(new String[] {"firstName", "lastName"})
.targetType(Person.class).build();
}
#Bean
public PersonItemProcessor processor() {
return new PersonItemProcessor();
}
#Bean
public FlatFileItemWriter<String> writer() {
return new FlatFileItemWriterBuilder<String>()
.name("greetingItemWriter")
.resource(new FileSystemResource(
"target/test-outputs/greetings.txt"))
.lineAggregator(new PassThroughLineAggregator<>()).build();
}
}
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